ACPICA: Implement simplified Table Manager
The Table Manager component has been completely
redesigned and reimplemented. The new design is much
simpler, and reduces the overall code and data size of
the kernel-resident ACPICA by approximately 5%. Also,
it is now possible to obtain the ACPI tables very early
during kernel initialization, even before dynamic memory
management is initialized.
Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
index 00f33ed..21449f3 100644
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/events/evmisc.c
@@ -63,6 +63,10 @@
};
#endif
+/* Pointer to FACS needed for the Global Lock */
+
+static struct acpi_table_facs *facs = NULL;
+
/* Local prototypes */
static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context);
@@ -306,7 +310,7 @@
* If we don't get it now, it will be marked pending and we will
* take another interrupt when it becomes free.
*/
- ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_common_fACS.global_lock, acquired);
+ ACPI_ACQUIRE_GLOBAL_LOCK(facs, acquired);
if (acquired) {
/* Got the lock, now wake all threads waiting for it */
@@ -342,6 +346,13 @@
ACPI_FUNCTION_TRACE(ev_init_global_lock_handler);
+ status =
+ acpi_get_table(ACPI_SIG_FACS, 0,
+ (struct acpi_table_header **)&facs);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
acpi_gbl_global_lock_present = TRUE;
status = acpi_install_fixed_event_handler(ACPI_EVENT_GLOBAL,
acpi_ev_global_lock_handler,
@@ -414,7 +425,7 @@
/* Attempt to acquire the actual hardware lock */
- ACPI_ACQUIRE_GLOBAL_LOCK(acpi_gbl_common_fACS.global_lock, acquired);
+ ACPI_ACQUIRE_GLOBAL_LOCK(facs, acquired);
if (acquired) {
/* We got the lock */
@@ -438,6 +449,7 @@
*/
status = acpi_ex_system_wait_semaphore(acpi_gbl_global_lock_semaphore,
ACPI_WAIT_FOREVER);
+
return_ACPI_STATUS(status);
}
@@ -472,8 +484,7 @@
/* Allow any thread to release the lock */
- ACPI_RELEASE_GLOBAL_LOCK(acpi_gbl_common_fACS.global_lock,
- pending);
+ ACPI_RELEASE_GLOBAL_LOCK(facs, pending);
/*
* If the pending bit was set, we must write GBL_RLS to the control